USER'S INSTRUCTIONS: The project work you are about to view is on "design and analysis of over voltage protection system in a distribution network". Please, sit back and study the below research material carefully. This project topic "design and analysis of over voltage protection system in a distribution network" have complete 5(five) Chapters. The complete Project Material/writeup include: Abstract + Introduction + etc + Literature Review + methodology + etc + Conclusion + Recommendation + References/Bibliography.Our aim of providing this "design and analysis of over voltage protection system in a distribution network" project research material is to reduce the stress of moving from one school library to another all in the name of searching for"design and analysis of over voltage protection system in a distribution network"research materials. We are not encouraging any form of plagiarism. This service is legal because, all institutions permit their students to read previous projects, books, articles or papers while developing their own works.

---

TITLE PAGE

 

BY

---
--/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---

---

APPROVAL PAGE

This is to certify that the research work, "design and analysis of over voltage protection system in a distribution network" by ---, Reg. No. --/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.

By
---                                                     . ---
Supervisor                                                  Head of Department.
Signature……………….                           Signature……………….        

……………………………….
---
External Invigilator

---

DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.

---

ACKNOWLEDGEMENT

The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
My appreciation goes to some of my lecturers among whom are Mr. ---, and Dr. ---. I also recognize the support of some of the staff of --- among whom are: The General Manager, Deputy General manager, the internal Auditor Mr. --- and the ---. Finally, my appreciation goes to my elder sister ---, my lovely friends mercy ---, ---, --- and many others who were quite helpful.

---

PROJECT DESCRIPTION: This work "design and analysis of over voltage protection system in a distribution network" research material is a complete and well researched project material strictly for academic purposes, which has been approved by different Lecturers from different higher institutions. We made Preliminary pages, Abstract and Chapter one of "design and analysis of over voltage protection system in a distribution network" visible for everyone, then the complete material on "design and analysis of over voltage protection system in a distribution network" is to be ordered for. Happy viewing!!!

---

Overvoltage happens in aconditionwherethevoltageisincreasedandexceedits design limit. This situation may lead to harmful damage to machines or related equipmentthat connected to the system. Overvoltage can exist in a form of transient, voltage spike orpermanent,dependingonitsduration.Along with increasing importance of power quality theeffect of overvoltage protection to short interruptions andvoltagedipsisofgreatimportance.Withadvancedreliability analysis tool integrated to network informationsystem,theeffectofprotectioncanbestudied. This study is aimed at carrying out an analysis of over voltage protection system in a distribution network.

 

 

TABLE OF CONTENTS
Cover page
Title page
Approval page
Dedication
Acknowledgement
Abstract
CHAPTER ONE
INTRODUCTION
1.1      Background of the project

• Problem statement
• Aim and Objective of the project
• Significance of the study
• Scope and limitation

CHAPTER TWO
LITERATURE REVIEW

• Review of the study
• Overvoltages and overvoltageprotection
• Causes of over voltage in power system
• Lightning, switching and temporary over voltage
• Effects of over voltages on power systems
• Review of overvoltage protection
• Methods of protection against lightning
• Insulation coordination

Chapter three
Methodology

• Modelling of the evaluated system

Chapter four
4.0     simulation results anddiscussion
CHAPTER FIVE

• Conclusion
• Recommendation

References

 

 

 

CHAPTER ONE
1.0                                                               INTRODUCTION
1.1                                                  BACKGROUND OF THE STUDY
Protection systems are vital components of any power system. Its goal is to detect andisolate faults when they occur. By doing so, safe operation of power systems can beachieved, extensive equipment damage can be avoidedand theareasaffectedbyfaultscan be minimized.
The overvoltage protection of distribution networks is quitechallenging task. The traditional reason for overvoltageprotection has been prevention of failure of expensivecomponentsliketransformers.Alongwithincreasingimportanceofpowerqualitytheeffectofovervoltageprotection to short interruptions and voltage dips is of greatimportance.Thismeansthatovervoltageprotectionshouldbedeeplymodeledandanalysedaspartofreliabilitybasednetwork analysis. For example, selection of using surgearrestersinsteadofsparkgapsintransformerprotectionisnotnecessarybasedonthetransformeritselfbuttheconsequencesofshortinterruptionandvoltagedipsduetoarcs in spark caps. This paper presents different types ofstrategies which can be applied in overvoltage protectionplanning but focusing mainly on the use of surge arresters which is been modeled in this work.
1.2                                                        PROBLEM STATEMENT
Power distribution systems are directly linked to customers. Thus the distributionsystem plays an important role in the overall power system reliability and the perceivedreliability to customers. By improving distribution protection systems such that sustainedoutagetimescanbereduced,powersystem reliabilitycanbeenhanced.
For every power distribution system lightning dischargesare one of the most significant disturbances, since it can giveorigintoovervoltageandconsequentinfluencesonthequalityofthepower supply.Amongseveralconsequencesoftheincidenceofanylightningdischarge,oneofthemostsignificantisthetransference of voltage surge between primary and secondarywindings of any power distribution transformer.The degreeof transference basically depends on thefrequency responseof the transformer (Cabral et al, 2010) as well as on its grounding impedance.Thus,severalstudieshavebeencarriedoutbyanalyzingtransferred or induced voltages due to lightning dischargesthrough groundingsystems(Visacro et al, 2012).
This work studies the analyses of such kind of overvoltage requiretheutilizationofreliablemodelingtorepresentalltheelementsinvolvedinthisprocess.Inthisworkdistribution transformermodeling is considered using surge arrester.
1.3                                         AIM AND OBJECTIVE OF THE PROJECT
This work is aimed carrying out an analysis of over voltage protection system in a distribution network.
The objective of this work is:

• Provide a solution to voltage in a power system.
• To presentsamodelfortheanalysisofovervoltage in power distribution network caused by lightningdischarges.
• To carry out a simulation of overvoltage protection scheme using surge arrester.

1.4                                        SIGNIFICANCE OF THE STUDY
As a student of electrical and electronic engineering, working on this project has expose my knowledge to causes and solution to over-voltage protection system in a distribution network. It has made me to understand how surge arrester can be model in a distribution network.
1.5                        SCOPE AND LIMITATION OF THE STUDY
The scope of this work covers the modeling of a overvoltage protection scheme based on the use of surge arresters on a distribution network. In this work surge arresters are mounted on an additional wood crossarm, considerably closer to the transformer terminal bushings. The total length of the surge arrester connection conductors is 6 m and 1.1 m for the common practice and the alternative protection scheme, respectively.
There are different methods of carrying out a protection scheme in a power system, but in this work only the use of surge arresters was studied.

CHAPTER FIVE
5.1                                                          CONCLUSIONS
Detailed ATP-EMTP simulations have been performed to investigate the effect of the length of the surge arrester connection conductors upon impinging lightning surges on a pole-mounted 20/0.4 kV distribution transformer. Both first and subsequent direct lightning strokes to a connected MV overhead line were considered. A shorter length of the surge arrester connection conductors, utilized in an alternative to the common practice transformer protection scheme, results in a reduction in the amplitude of the over-voltages arising at the MV terminals of the transformer and in a slower rate of increase of the overvoltage amplitude with lightning return-stroke current. These effects are more pronounced for subsequent than first lightning direct strokes to the overhead distribution line. The over-voltages transferred to the LV terminals of the transformer are practically not affected by the length of the surge arrester connection conductors.
By implementing the alternative than the common practice transformer protection scheme the transformer failure rate, estimated through risk assessment, is reduced by about 11%. Surge protective devices provided the necessary protection to the distribution transformer against transferred over-voltages. To further improve the lightning performance of the transformer additional measures should be considered such as reducing the transformer grounding resistance and installing line arresters; this calls for further work.
5.2      RECOMMENDATION
There are many method of over voltage protection scheme in a distribution network, I recommend that the future research should base on other methods.
Working on this topic as my project is a good idea and it comes at the right time. I am suggesting that this particular topic should also be given to other students both in higher and lower class.

 

---

CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of "design and analysis of over voltage protection system in a distribution network" is also available. Order full work to download. Chapter two of "design and analysis of over voltage protection system in a distribution network" consists of the literature review. In this chapter all the related work on "design and analysis of over voltage protection system in a distribution network" was reviewed.

CHAPTER THREE: The complete chapter three of "design and analysis of over voltage protection system in a distribution network" is available. Order full work to download. Chapter three of "design and analysis of over voltage protection system in a distribution network" consists of the methodology. In this chapter all the method used in carrying out this work was discussed.

CHAPTER FOUR: The complete chapter four of "design and analysis of over voltage protection system in a distribution network" is available. Order full work to download. Chapter four of "design and analysis of over voltage protection system in a distribution network"consists of all the test conducted during the work and the result gotten after the whole work

CHAPTER FIVE: The complete chapter five of "design and analysis of over voltage protection system in a distribution network" is available. Order full work to download. Chapter five of "design and analysis of over voltage protection system in a distribution network" consist of conclusion, recommendation and references.

 

---

To "DOWNLOAD" the complete material on this particular topic above click "HERE"

Do you want our Bank Accounts? please click HERE

To view other related topics click HERE

To "SUMMIT" new topic(s), develop a new topic OR you did not see your topic on our site but want to confirm the availiability of your topic click HERE

Do you want us to research your new topic? if yes, click "HERE"

Do you have any question concerning our post/services? click HERE for answers to your questions

---

For more information contact us through any of the following means:

Mobile No :+2348146561114 or +2347015391124 [Mr. Innocent]

Email address :engr4project@gmail.com

Watsapp No :+2348146561114

---

COUNTRIES THAT FOUND OUR SERVICES USEFUL

Australia, Botswana, Canada, Europe, Ghana, Ireland, India, Kenya, Liberia, Malaysia, Namibia, New Zealand, Nigeria, Pakistan, Philippines, Singapore, Sierra Leone, South Africa, Uganda, United States, United Kindom, Zambia, Zimbabwe, etc
Support: +234 8146561114 or +2347015391124

Watsapp No :+2348146561114

Email Address :engr4project@gmail.com

---

FOLLOW / VISIT US VIA: